An organism that grows at the top of a tube of medium containing thioglycolate is probably a(n)
A) strict aerobe.
B) facultative anaerobe.
C) aerotolerant anaerobe.
D) microaerophile.
E) strict anaerobe.

Question

Quizplus · Accepted Answer

Strict aerobes require oxygen for growth, so an organism growing at the top of a thioglycolate tube, where oxygen concentration is highest, is likely a strict aerobe.

An Organism That Grows at the Top of a Tube